YUV scale clamp horizontal pixels when filtering BUG=19113 TEST=scale up by 4x and watch right edge for texel wrap.
YUV scale clamp horizontal pixels when filtering
BUG=19113
TEST=scale up by 4x and watch right edge for texel wrap.

Review URL: http://codereview.chromium.org/1560032

git-svn-id: http://src.chromium.org/svn/trunk/src@44437 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: c34dc4bae2bbc2b1751559cc77c7ae5d6a2898b0
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser